A Smart ForFour 1.0i 71hp (2014 ->) makes about 79 hp and 105 Nm with Stage 1 software, compared with 71 hp and 91 Nm from the factory. That is 8 hp and 14 Nm extra.

This is a petrol engine with a displacement of 999 cc and engine code M281.920. The engine is controlled by the Bosch ME17.9.20. The software file can be written with tools such as Autotuner, CMD CMDFlash and MagicMotorsport Flex.

Besides Stage 1, the following options are available for this vehicle: DECAT, DTC Removal, START/STOP OFF, FLAPS, Pop & Bang Crackle map and Vmax.

Frequently asked questions

How much power and torque does a Smart ForFour 1.0i 71hp gain with Stage 1?

About 8 hp and 14 Nm: from 71 hp / 91 Nm to roughly 79 hp / 105 Nm. The exact gain depends on engine condition and fuel quality.

Which ECU does a Smart ForFour 1.0i 71hp use?

Bosch ME17.9.20.

Which tools can read a Smart ForFour 1.0i 71hp?

Autotuner, CMD CMDFlash and MagicMotorsport Flex.

Which extra options are available for a Smart ForFour 1.0i 71hp?

DECAT, DTC Removal, START/STOP OFF, FLAPS, Pop & Bang Crackle map and Vmax.

Figures are indicative and vehicle specific. Check the regulations that apply in your country before modifying engine software.